EP2607380A2 - Protéine de fusion comportant un domaine régulant la transactivation d'un facteur de transcription et un domaine de transduction de protéine, et inhibiteur de fonction de facteur de transcription comprenant cette protéine - Google Patents

Protéine de fusion comportant un domaine régulant la transactivation d'un facteur de transcription et un domaine de transduction de protéine, et inhibiteur de fonction de facteur de transcription comprenant cette protéine Download PDF

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EP2607380A2
EP2607380A2 EP11818438.1A EP11818438A EP2607380A2 EP 2607380 A2 EP2607380 A2 EP 2607380A2 EP 11818438 A EP11818438 A EP 11818438A EP 2607380 A2 EP2607380 A2 EP 2607380A2
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transcription factor
tmd
domain
fusion protein
cells
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EP2607380A4 (fr
EP2607380B1 (fr
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Tae Yoon Park
Ye Kyung Seong
Jen Young Cho
Jong Hyun Park
Sang Hwa Yang
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Good T Cells Inc
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Lee Sang-Kyou
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Priority claimed from KR1020100080864A external-priority patent/KR101525856B1/ko
Priority claimed from KR1020100126455A external-priority patent/KR101557343B1/ko
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Priority to EP18188839.7A priority Critical patent/EP3424946B1/fr
Priority to EP21160559.7A priority patent/EP3875474A1/fr
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    • A—HUMAN NECESSITIES
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    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
    • C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
    • C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
    • C07K14/4702—Regulators; Modulating activity
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    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
    • C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
    • C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
    • C07K14/4702—Regulators; Modulating activity
    • C07K14/4703—Inhibitors; Suppressors
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    • C12N15/09—Recombinant DNA-technology
    • C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
    • C12N15/62—DNA sequences coding for fusion proteins
    • A—HUMAN NECESSITIES
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    • C07K2319/00—Fusion polypeptide
    • C07K2319/01—Fusion polypeptide containing a localisation/targetting motif
    • C07K2319/10—Fusion polypeptide containing a localisation/targetting motif containing a tag for extracellular membrane crossing, e.g. TAT or VP22
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    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K2319/00—Fusion polypeptide
    • C07K2319/70—Fusion polypeptide containing domain for protein-protein interaction
    • C07K2319/73—Fusion polypeptide containing domain for protein-protein interaction containing coiled-coiled motif (leucine zippers)
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    • C07—ORGANIC CHEMISTRY
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    • C07K2319/00—Fusion polypeptide
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K2319/00—Fusion polypeptide
    • C07K2319/80—Fusion polypeptide containing a DNA binding domain, e.g. Lacl or Tet-repressor
    • C07K2319/81—Fusion polypeptide containing a DNA binding domain, e.g. Lacl or Tet-repressor containing a Zn-finger domain for DNA binding

Definitions

  • the present invention relates to a fusion protein having protein transcription factor transactivation-regulating domain and protein transduction domain, and an inhibitor for a transcription factor function comprising the same.
  • Transcription factor is an element to control the transcription of a gene which can modulate the transcriptional activity through binding to specific sequences in DNA or binding to other factor(s). If this binding or interaction does not function correctly, various diseases associated with the malfunctions or defects of the transcription factor could be induced.
  • PTD Protein Transduction Domain
  • this inventor completes the generation of the fusion protein comprising the part of a transcription factor and PTD on the basis of the fact that the transcription factor exerts the function(s) through its interaction with DNA or other proteins.
  • the present invention is intended to provide an inhibitor for transcription factor function comprising TMD of transcription factor and PTD, and to provide a pharmaceutical composition for treating diseases associated with malfunctions or defects of the transcription factor comprising said fusion protein and pharmaceutically acceptable excipients.
  • the present invention is intended to provide a method for treating the diseases associated with malfunctions or defects of the transcription factor in a human, comprising administering to said human an effective amount of the fusion protein comprising the TMD of the transcription factor and PTD.
  • the present invention is intended to provide a fusion protein comprising the TMD of the transcription factor and PTD, nucleic acids encoding said fusion protein, vectors comprising said nucleic acids, and host cells comprising said vectors.
  • the present invention is intended to provide a method for producing a fusion protein, comprising a step of expressing the vector comprising the gene encoding TMD of the transcription factor and the gene encoding PTD in the host cells.
  • TMD Transcription Modulation Domain
  • transcription factor which is involved in functional interaction with molecules or factors important during transcription such as, but not limited to, DNA, RNA, transcriptional co-activator, transcriptional repressor, enhancer-binding factor or ligand, or in dimerization/multimerization or nuclear localization.
  • the present invention provides an inhibitor for transcription factor function comprising the fusion protein comprising TMD of transcription factor and PTD.
  • the transcription factor in the embodiment is selected from the group consisting of ROR ⁇ t (Retinoic acid-related orphan receptor gamma t), Tbet (T-box 21), GATA-3 (GATA binding protein 3), FOXP3 (Forkhead box P3), ROR ⁇ 4 (Retinoic acid-related orphan receptor alpha 4), HIF-1/2 ⁇ (Hypoxia inducible factor 1/2 ⁇ ), STAT (Signal transducers and activators of transcription), PPAR ⁇ (peroxisome proliferator-activated receptor gamma), p53, AP-1, NF ⁇ B (nuclear factor kappa-B), NKx2.5 (NK2 transcription factor related, locus 5), FOXO (Forkhead box O), RELA (v-rel reticuloendotheliosis viral oncogene homolog A) or Run
  • the transcription factor in the embodiment is selected from the group consisting of ROR ⁇ t (Retinoic acid-related orphan receptor gamma t), Tbet (T-box 21), GATA-3 (GATA binding protein 3) and FOXP3 (Forkhead box P3).
  • PTD in the embodiment is selected from the group consisting of HP4, Hph-1, Mph-1, Sim-2, Tat, VP22, Antp (Antennapedia), Pep-1 (peptide), PTD-5, R9 (arginine), 7R and CTP (Cytoplasmic Transduction Peptide).
  • PTD in the embodiment may have amino acid sequences of SEQ ID NO: 1.
  • TMD of transcription factor in the embodiment may be DNA binding domain or protein interaction domain.
  • TMD of the transcription factor comprises one or more selected from the group consisting of helix-turn-helix domain, zinc finger domain, leucine zipper domain, winged helix domain, winged helix turn helix domain, helix-loop-helix domain, HMG-box domain and forkhead domain.
  • TMD of the transcription factor comprises one or more selected from the group consisting of the domain interacting with DNA, RNA, transcriptional co-activator, transcriptional repressor, enhancer-binding factor and ligand, the domain involved in dimerization/multimerization and the domain involved in nuclear localization.
  • TMD of the transcription factor may have the sequences of SEQ ID NOs: 2 to 6.
  • TMD of the transcription factor may have the sequences of SEQ ID NOs: 7 to 11.
  • the present invention provides a fusion protein comprising TMD of transcription factor and PTD.
  • the transcription factor in the embodiment is selected from the group consisting of RORyt (Retinoic acid-related orphan receptor gamma t), Tbet (T-box 21), GATA-3 (GATA binding protein 3), FOXP3 (Forkhead box P3), ROR ⁇ 4 (Retinoic acid-related orphan receptor alpha 4), HIF-1/2 ⁇ (Hypoxia inducible factor 1/2 ⁇ ), STAT (Signal transducers and activators of transcription), PPAR ⁇ (peroxisome proliferator-activated receptor gamma), p53, AP-1, NF ⁇ B (nuclear factor kappa-B), NKx2.5 (NK2 transcription factor related, locus 5), FOXO (Forkhead box O), RELA (v-rel reticuloendotheliosis viral oncogene homolog A) and Runx (runt-related transcription
  • the transcription factor in the embodiment is selected from the group consisting of ROR ⁇ t (Retinoic acid-related orphan receptor gamma t), Tbet (T-box 21), GATA-3 (GATA binding protein 3) and FOXP3 (Forkhead box P3).
  • PTD in the embodiment is selected from the group consisting of HP4, Hph-1, Mph-1, Sim-2, Tat, VP22, Antp (Antennapedia), Pep-1 (peptide), PTD-5, R9 (arginine), 7R and CTP (Cytoplasmic Transduction Peptide).
  • PTD in the embodiment may have the amino acid sequences of SEQ ID NO: 1.
  • TMD of transcription factor in the embodiment may be DNA binding domain or protein interaction domain.
  • TMD of the transcription factor comprises one or more selected from the group consisting of helix-turn-helix domain, zinc finger domain, leucine zipper domain, winged helix domain, winged helix turn helix domain, helix-loop-helix domain, HMG-box domain and forkhead domain.
  • TMD of the transcription factor comprises one or more selected from the group consisting of the domain interacting with DNA, RNA, transcriptional co-activator, transcriptional repressor, enhancer-binding factor and ligand, the domain involved in dimerization/multimerization and the domain involved in nuclear localization.
  • TMD of the transcription factor may have the sequences of SEQ ID NOs: 2 to 6.
  • TMD of the transcription factor may have the sequences of SEQ ID NOs: 7 to 11.
  • the present invention provides a nucleic acid encoding said fusion protein, a vector comprising said nucleic acid and a host cell comprising said vector.
  • PTD in the embodiment may have the sequence of SEQ ID NO: 1.
  • TMD of the transcription factor may have the sequences of SEQ ID NOs: 2 to 6.
  • the fusion protein in the host cell may have the sequences of SEQ ID NOs 7 to 11.
  • the host cell may be BL21 star(DE3) pLys S.
  • the present invention provides a method for producing the fusion protein by expressing the vector which combines the gene encoding TMD of the transcription factor and the gene encoding PTD in the host cells.
  • the present invention provides a pharmaceutical composition for treating diseases associated with malfunctions or defects of the transcription factor, comprising the fusion protein comprising TMD of the transcription factor and PTD, and pharmaceutical acceptable excipients.
  • the transcription factor in the embodiment is NKx2.5 (NK2 transcription factor related, locus 5) or HIF-1 ⁇ (Hypoxia inducible factor 1 ⁇ )
  • the disease associated with malfunctions or defects of the transcription factor may be a neurological disease.
  • the transcription factor in the embodiment is HIF-1 ⁇ (Hypoxia inducible factor 1 ⁇ )
  • the disease associated with malfunctions or defects of the transcription factor may be a neurological disease.
  • the disease associated with malfunctions or defects of the transcription factor may be diabetes.
  • the transcription factor in the embodiment is ROR ⁇ t (Retinoic acid-related orphan receptor gamma t), ROR ⁇ 4 (Retinoic acid-related orphan receptor alpha 4) or FOXO (Forkhead box O)
  • the disease associated with malfunctions or defects of the transcription factor may be an autoimmune disease or inflammatory disease.
  • the disease associated with malfunctions or defects of transcription factor may be an autoimmune disease or inflammatory disease.
  • the transcription factor in the embodiment is AP-1 or NF ⁇ B (nuclear factor kappa-B)
  • the disease associated with malfunctions or defects of the transcription factor may be a vascular disease or inflammatory disease.
  • the transcription factor is p53, SP1 or RELA (v-rel reticuloendotheliosis viral oncogene homolog A)
  • the disease associated with malfunctions or defects of the transcription factor may be cancer.
  • the disease associated with malfunctions or defects of the transcription factor may be asthma or atopy.
  • the disease associated with malfunctions or defects of the transcription factor may be EAE (MS), RA or IBD (Crohn's disease).
  • the transcription factor in the embodiment is Foxp3
  • the disease associated with malfunctions or defects of the transcription factor may be cancer.
  • the transcription factor in the embodiment is Tbet, the disease associated with malfunctions or defects of the transcription factor may be RA, IBD (Crohn's disease) or EAE (MS).
  • the fusion protein according to the present invention can be used to treat various diseases associated with malfunctions or defects of the transcription factor.
  • Example 1 Generation, separation and purification of the fusion protein comprising TMD of a transcription factor and PTD
  • the DNA fragment encoding RORgt-TMD domain that controls transcriptional activity (SEQ ID NO: 2, the domain of controlling transcriptional activity in transcription factor RORgt) or that encoding RORgt-LBD was made by PCR, and the three recombinant DNA constructs such as tRORgt-TMD comprising Hph-1-PTD and RORgt-TMD, tRORgt-LBD comprising Hph-1-PTD and RORgt-LBD, and RORgt-TMD which does not have Hph-1-PTD are produced by recombinant DNA technology ( Figure 1 ).
  • the fusion proteins were combined with a Ni-NTA bead through 6x histidine in the forepart of tRORgt-TMD, tRORgt-LBD or RORgt-TMD fusion proteins. And then, we placed the fusion proteins into the column having Ni-NTA beads, washed the column with wash buffer (30 mM imidazole, 300 mM NaCl, 50 mM NaH2PO4, pH 8.0), and then isolated the fusion proteins with elution buffer (3M imidazole, 300mM NaCl, 50 mM NaH2PO4, pH 8.0). We removed Nacl and imidazole through changing the buffer into 10% glycerol PBS by using PD-10.
  • tGT3-TMD comprising Hph-1-PTD and the transcription modulation domain (SEQ ID NO: 3) of GATA-3
  • tTbet-TMD comprising Hph-1-PTD and the transcription modulation domain (SEQ ID NO: 4) of Tbet
  • tFoxp3-TMD comprising Hph-1-PTD and the transcription modulation domain (SEQ ID NOs: 5 and 6) of Foxp3 (refer to Figures 1b, 1c and 1d ) were made in accordance with the above method.
  • tGT3-TMD comprising the transcriptional modulation domain of GATA-3 (SEQ ID NO: 3) in Figure 1
  • tTbet-TMD comprising the transcriptional modulation domain of Tbet
  • tFoxp3-TMD comprising the transcriptional modulation domain of Foxp3
  • Example 3 Specific inhibition of the transcriptional activity of the TF by the fusion protein
  • Hela cells (1 x 10 5 cells per well) were mixed with DNA-Plus-Lipofectamine Reagent complex for 3 hours, and then treated with 100nM - 2 ⁇ M of tROR ⁇ t-TMD, tROR ⁇ t-LBD or non-transducible ROR ⁇ t-TMD fusion proteins overnight.
  • tROR ⁇ t-TMD DNA-Plus-Lipofectamine Reagent complex
  • tROR ⁇ t-LBD tROR ⁇ t-LBD
  • ROR ⁇ t-TMD fusion proteins 100nM - 2 ⁇ M of tROR ⁇ t-TMD, tROR ⁇ t-LBD or non-transducible ROR ⁇ t-TMD fusion proteins overnight.
  • luciferase activity using a luciferase detection system (Promega) after washing and extraction. Each transfection experiment was performed three times and the activity of luciferase was tested by luminator (Promega).
  • tROR ⁇ t-TMD fusion protein reduced luciferase activity by 6 folds, whereas tROR ⁇ t-LBD or non-transducible ROR ⁇ t-TMD didn't affect it.
  • the mutant form of tRORyt-TMD (RR-AG) which cannot bind to DNA by mutation of amino acids critical for DNA binding could't prevent luciferase activity because the mutant form was not able to bind to IL-17 promoter ( Figure 5 ). Therefore, tROR ⁇ t-t-TMD fusion protein specifically inhibits the binding of endogenous ROR ⁇ t to IL-17 promoter and this inhibitive function was specific to IL-17 promoter.
  • tROR ⁇ t-TMD fusion protein can suppress the function of endogenous ROR ⁇ t which induces the expression and secretion of IL-17A from Th17 cells.
  • splenocytes with 200 nM of tROR ⁇ t-TMD fusion protein for 1 hour in advance and then the cells were washed to remove the un-transduced tROR ⁇ t-TMD.
  • the cells were stimulated by anti-CD3 and anti-CD28 antibodies and the level of cytokine secretion was analyzed.
  • tROR ⁇ t-TMD specifically inhibits the secretion of Il-17A from Th17 cells, but does not affect the secretion of IFN- ⁇ from Th1 cells, secretion of IL-4 from Th2 cells and IL-2 secretion from the activated T cells (refer to Figure 6 ).
  • IL-12 and anti-IL-4 antibody We added 10 ng/ml ofIL-12 and anti-IL-4 antibody to differentiate T cells into Th1 cell.
  • IL-4, IL-5 ng/ml and anti-IFN-r antibody to differentiate naive T cells into Th2 cell, and 3 ng/ml of TGF ⁇ 1, 30 ng/ml of IL-6, 100 ng/ml of IL-21, anti-IL-4 antibody, and anti-IFN- ⁇ antibody to induce the differentiation of naive T cells into Th17.
  • Th1-specific and Th2-specific cytokines were not changed, whereas Th17 cell-specific cytokines such as IL-17A and IL-17F which are known to be induced by ROR ⁇ t were decreased significantly. From these results, tROR ⁇ t-TMD can selectively inhibit the differentiation of naive T cells into Th17 cells and expression and secretion of Th17 cell-specific cytokines in which ROR ⁇ t plays crucial roles (refer to Figure 7 ).
  • tROR ⁇ t-TMD could not only prevent the endogenous RORgt from binding to the promoter of the genes induced by RORgt, but also inhibited the function of interactome recruited by RORgt in the promoter of RORgt-induced genes, thereby inhibiting the differentiation of naive T cells into Th17 cells (refer to Figure 8 ).
  • tTbet-TMD can inhibit the differentiation of naive T cells into Th1 cells.
  • MACS Magnetic Cell Sorting
  • the cells were cultured in the presence of IL-12(10ng/ml) and anti-IL-4(5ug/ml) following TcR stimulation with anti-CD3 mAb (1 ug)and anti-CD28 mAb (1 ug) for 72 hours, and the cells were harvested and restimulated with PMA(50ng/ml) and ionomycin(1ug/ml) for 4 hours.
  • the cells were permeablized, incubated with anti-IFN-g mAb labeled with FITC and then the level of intracellular IFN-g was analyzed by FACS.
  • tTbet-TMD can be a novel therapeutic to alleviate chronic inflammatory responses and autoimmune diseases in which Th1 cells play dominant roles.
  • tFoxp3-TMD can suppress the immunological functions of nTreg cells via competitive inhibition of the endogenous Foxp3 in nTreg cells.
  • BMDC Breast Cell Cells
  • nTreg cells treated with tFoxp3-TMD were co-cultured for 72 hours with CD4+CD25- T cells prepared as the effector T cells, and immunosuppressive potential of nTreg cells on effector T cells was analyzed by the method of thymidine incorporation into effector T cells.
  • tFoxp3-TMD comprising the different functional TMD can suppress the immunological functions of iTreg cells via competitive inhibition of the endogenous Foxp3 in iTreg cells.
  • CD4+T cells from the splenocytes of FoxP3-GRP-Knock-In (KI) mouse using MACS, and further purified CD4+GFP-CD62L2+ cells using FACS. These cells were treated with tFoxp3-TMD and induced to differentiate into iTreg cells by culturing them in the presence of TGF(10 ng/ml) and IL-2(100 U/ml) following TcR stimulation via anti-CD3 and anti-CD28 mAb for 72 hours.
  • the immunosuppressive activity of iTreg cells treated with tFoxp3-TMD on proliferation and functions of effector T cells was analyzed by the method of thymidine incorporation into effector T cells.
  • the level of Foxp3 expression was comparable between iTreg cells differentiated from naive T cells treated with tFoxp3-F-TMD and those from naive T cells without tFoxp3-F-TMD treatment.
  • iTreg cells treated with all tFoxp3-TMD except tFoxp3-F-TMD and tFoxp3-R-TMD showed a comparable level of immunosuppressive activity on effector T cells proliferation, but iTreg cells treated with tFoxp3-F-TMD or tFoxp3-R-TMD from 1:4 ratio of nTreg cells to effector T cells showed the most prominent immunosuppression on proliferation of effector T cells.
  • iTreg cells treated with other tFoxp3-TMDs could not reduce the immunosuppressive functions of iTreg cells on effector T cells. Therefore, the amino acid residues in tFoxp3-F-TMD involved in recognition of DNA sequences inhibit the functions of the endogenous Foxp3 and/or tFoxp3-F-TMD may inhibit the functions of transcription co-activators making an access to the promoter region of the genes induced by endogenous Foxp3, thereby suppressing the functions ofnTreg cells and iTreg cells ( Figure 10 ).
  • Example 4 Therapeutic efficacy of tROR ⁇ t-TMD fusion protein in EAE animal model
  • EAE animal model was generated with 6-week-old C57BL/6 mice. The mice had 2 weeks of stabilization period, and 500ng of Pertussis Toxin was injected into the abdominal cavity of the mice followed by injection of 150 ng of MOG peptide and 200 ug of CFA into the subcutaneous fat.
  • the behavioral responses started from the 9th day of post-injection. The first was paralysis of the tail, and then that of the hind legs, and forelimb paralysis appeared at the severe disease stage.
  • Each symptom was scored for evaluation of disease progression (1 point: slight paralysis of the tail, 2 points: complete paralysis of the tail and slight paralysis of the hind legs, 3 points: complete paralysis of one hind leg, 4 points: complete paralysis of both hind legs, 5 points: complete paralysis of both hind legs and slight paralysis of the forelegs, 6 points: death).
  • 50 ⁇ g of tROR ⁇ t-TMD was injected into the peritoneal cavity three times a week from the 2nd day of disease induction. The results indicate that the disease onset frequency was reduced by 50% in the mice treated with tROR ⁇ t-TMD and the disease severity was improved to be minimal.
  • mice treated with tROR ⁇ t-TMD The disease onset frequency of the untreated mice was 100% and the disease severity was 3.05 ⁇ 0.23, but that of the mice treated with tROR ⁇ t-TMD was 0.55 ⁇ 0.27. These results demonstrate that tROR ⁇ t-TMD has a marked disease prevention effect on EAE (animal model of MS) where Th17 cells play a critical role.
  • tROR ⁇ t-TMD has a preventive and therapeutic effect on EAE autoimmunity mainly induced by Th17 cells ( Fig 11 ).
  • CD4+ T cells isolated from the spleen of the mice with EAE showing the therapeutic efficacy by tROR ⁇ t-TMD were prepared and re-stimulated with the antigenic peptide MOG which was used to induce EAE.
  • the CD4+ T cells in the mice had differentiated into the specific CD4+ T cell subset upon recognition of MOG peptides and thereby the differentiated CD4+ T cells can secrete the cytokines specific to the T cells subset when re-stimulated with the same antigenic peptide.
  • splenocytes were prepared from the mice treated with tROR ⁇ t-TMD from 2 days after EAE induction, and re-stimulated with 40 ⁇ g/ml of MOG peptide for 48 hours.
  • MOG peptide 40 ⁇ g/ml of MOG peptide for 48 hours.
  • Th17 cell differentiation and functions via RORgt can lead to inhibition of Th1 cytokine secretion such as IFN-g suggests that Th17 cells may be activated and play dominant functions during the initial stage of EAE followed by the activation and functions of Th1 cells later.
  • the spinal cords of the mice were harvested on day 21 when the EAE clinical score was highest in the untreated mice, and the level of demyelination was examined.
  • Luxol Fast Blue was used to stain the myelinated tissue area so that the tissue with severe demyelination at the late stage of EAE cannot be stained.
  • the myelination state of the spinal cord of the EAE-induced mice treated with tROR ⁇ t-TMD was similar to that of the normal mice.
  • tROR ⁇ t-TMD exerts therapeutic efficacy on EAE by inhibition of the functions of the endogenous RORgt leading to the suppression of the differentiation of naive T cells into Th17 cells and functions of Th17 cells such as secretion ofIL-17 in vitro and in vivo ( Figs. 14, 15 and 16 ).
  • the animal model of allergic asthma was generated by injection of 100 ug of OVA and 20 mg of aluminum hydroxide into the peritoneal cavity of 6-week-old BALB/c mice at day 1 and day 14. And, 75 ug of tGT3-TMD was sprayed into the intranasal pathway on the 21st, 22nd and 23rd days to deliver tGT3-TMD into the lungs and bronchial space, and 150 ug of OVA was used for the antigenic challenge. On the 25th day of post-injection, the cells were harvested from the BAL fluid and the number of various inflammatory and immune cells was counted.
  • tGT3-TMD treatment significantly reduced the number of various inflammatory and immune cells ( Fig. 17 ).
  • the splenic T cells were prepared from the animal model of allergic asthma which showed the therapeutic effect by tGT3-TMD treatment and restimulated with anti-CD3 and anti-CD28. Because these splenic T cells were exposed to OVA antigen in vivo, Th2 cell-specific cytokines can be secreted upon antigenic rechallenge in vitro. When the level of Th2-specific cytokines in the culture supernatant was examined by ELISA, the secretion of IL-2, IL-5 and IL-13 was significantly reduced in mice treated with tGT3-TMD ( Fig. 18 ).
  • Example 6 Analysis of acute toxicity of tROR ⁇ t-TMD or tGT3-TMD
  • Acute toxicity test was performed with 6-week-old specific pathogen free (SPF) SD rats which were supplied from the Korean Experimental Distribution Center.
  • tRORgt-TMD The clinical abnormality and mortality was not observed in the rats treated with tRORgt-TMD or tGT3-TMD, and the body weight change, the cytotoxicity in blood and hematological biochemistry tests and the autoptic abnormality were not detected. Therefore, tRORgt-TMD treatment did not cause any toxicity with 1g/kg of injection, and tRORgt-TMD should be a safe reagent with LD50 being more than 1g/kg.
  • compositions comprising the fusion protein according to the present invention may be used with conventional oral formulations such as powders, granules, tablets, capsules, suspensions, syrups, aerosols, etc., externals, suppositories or sterile injection solution.
  • diluents or excipients such as conventional fillers, extenders, binders, wetting agents, disintegrating agents, surfactants, etc. may be used in the preparation of the formulations.
  • Solid formulations for oral administration include, for example, tablets, pellets, powders, granules, capsules, etc., and may be prepared with the addition of at least one or more excipients, for example, starch, calcium carbonate, sucrose, lactose, gelatin, etc.
  • Liquid formulation for oral administration includes, for example, suspensions, oral solution, emulsions, syrups, etc., and may be prepared with the addition of several excipients, such as wetting agents, sweetening agents, flavoring agents, preservatives, etc. other than the conventional diluents, such as water and liquid paraffin.
  • exemplary parenteral formulations include sterile aqueous solution, nonaqueous solvents, suspensions, emulsions, lyophilized formulations and suppositories.
  • nonaqueous solvents and suspensions include propylene glycol, polyethylene glycol, vegetable oils such as olive oil and injectable esters such as ethyl oleate.
  • Witepsol, macrogol, tween 61, cocoa buffer, laurinum, glycerogelatin, etc. may be used as suppository bases.
  • the dose of the proteins of the present invention may vary according to age, gender and body weight of patients. Generally, the amount of 0.001 to 500 mg/kg, preferably 0.1 to 100 mg/kg may be administered once or several times a day. In addition, the dose of the proteins may be increased or reduced according to the routes of administration, severity of disease, gender, body weight, age, etc. Accordingly, the dose is not intended to limit the scope of the present invention in any aspects.
  • the fusion protein in this invention can treat various diseases associated with malfunctions or defects of the transcription factor.
  • SEQ ID NO: 1 represents protein transduction domain
  • SEQ ID NOs: 2 to 6 represent TMD of the transcription factor
  • SEQ ID NOs: 7 to 11 represent the fusion protein.

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EP11818438.1A 2010-08-20 2011-08-19 Protéine de fusion comportant un domaine régulant la transactivation d'un facteur de transcription et un domaine de transduction de protéine, et inhibiteur de fonction de facteur de transcription comprenant cette protéine Active EP2607380B1 (fr)

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KR1020100126455A KR101557343B1 (ko) 2010-12-10 2010-12-10 전사인자 ｇａｔａ-3의 ｄｎａ 결합 도메인과 단백질 운반 도메인을 융합한 단백질을 이용한 알러지성 천식 치료용 약학 조성물 및 이를 이용한 치료방법
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